A suitable drive control of a lens unit for correcting image shake of a captured image is realized. An imaging device includes a lens unit supported rotatably in at least one of a yawing direction or a pitching direction within a casing, and this lens unit is driven by a driving section in at least one of the yawing direction or the pitching direction on a basis of a shake correction driving signal. In this case, the shake correction driving signal is generated by using detection information regarding rotation applied to the casing and detection information regarding rotation occurring on the lens unit in the casing.
Legal claims defining the scope of protection, as filed with the USPTO.
1. An imaging device, comprising: a lens unit supported rotatably in at least one of a yawing direction or a pitching direction within a casing; a first rotation detecting sensor that detects rotation applied to the casing; a second rotation detecting sensor that detects rotation occurring on the lens unit within the casing; a shake correction calculating circuitry that generates a first shake correction driving signal by using detection information by the first rotation detecting sensor and detection information by the second rotation detecting sensor; and a driving circuitry that drives the lens unit in at least one of the direction or the pitching direction on a basis of the shake correction driving signal, wherein a second lens unit is disposed on a photographic subject side of the lens unit, and an imaging optical system is formed by the lens unit and the second lens unit, and the shake correction calculating circuitry generates the first shake correction driving signal by using a difference value between the detection information by the first rotation detecting sensor and the detection information by the second rotation detecting sensor and a value made to reflect a ratio of a correction angle of the lens unit relative to a rotation angle of the casing.
2. The imaging device according to claim 1 , wherein the shake correction calculating circuitry generates a second shake correction driving signal by using the difference value.
3. The imaging device according to claim 1 , wherein the lens unit is disposed in a sealed state within the casing.
4. The imaging device according to claim 1 , wherein the lens unit is disposed in a sealed state within the casing by attaching the second lens unit with a state that the photographic subject side of the lens unit is blocked by the second lens unit.
5. The imaging device according to claim 1 , comprising: an image processing circuitry that performs image processing for a captured image signal acquired by the lens unit, wherein the image processing circuitry performs image distortion correction for the captured image signal by using the difference value.
6. The imagine device according to claim 1 , wherein the first rotation detecting sensor and the second rotation detecting sensor are an alar velocity sensors.
7. The imaging device according to claim 1 , wherein the first rotation sensor circuitry is an angular velocity sensor, and the second rotation detecting sensor is a position sensor using a hall element.
8. An image shake correcting method, the method comprising: generating, with a shake correction calculating circuitry, a first shake correction driving signal by using first detection information regarding rotation applied to a casing and second detection information regarding rotation occurring on a lens unit within the casing; driving, with a driving circuitry, the lens unit in at least one of a yawing direction or a pitching direction on a basis of the first shake correction driving signal, wherein a second lens unit is disposed on a photographic subject side of the lens unit, and an imaging optical system is formed by the lens unit and the second lens unit, and the shake correction calculating circuitry generates the first shake correction driving signal by using a difference value between the first detection information and the second detection information and a value made to reflect a ratio of a correction angle of the lens unit relative to a rotation angle of the casing.
9. The imaging shake correcting method according to claim 8 , further comprising: generating, with the shake correction calculating circuitry, a second shake correction driving signal by using the first detection information and the second detection information regarding rotation; driving, with the driving circuitry, the lens unit in at least one of the yawing direction or the pitching direction on the basis of the second shake correction driving signal, wherein the shake correction calculating circuitry generates the second shake correction driving signal by using the difference value.
10. The imaging shake correcting method according to claim 8 , wherein the lens unit is disposed in a sealed state within the casing.
11. The imaging shake correcting method according to claim 8 , wherein the lens unit is disposed in a sealed state within the casing by attaching the second lens unit with a state that the photographic subject side of the lens unit is blocked by the second lens unit.
12. The imaging shake correcting method according to claim 8 , further comprising: performing, with an image processing circuitry, image processing for a captured image signal acquired by the lens unit, wherein the image processing includes performing image distortion correction for the captured image signal by using the difference value.
13. An imaging device, comprising: a lens unit supported rotatably in at least one of a yawing direction or a pitching direction within a casing; and an electronic processor, the electronic processor configured to: determine a first rotation applied to the casing, determine a second rotation occurring on the lens unit within the casing, generate a first shake correction driving signal based on the first rotation that is determined and the second rotation that is determined, drive the lens unit in at least one of the yawing direction or the pitching direction on a basis of the first shake correction driving signal, wherein a second lens unit is disposed on a photographic subject side of the lens unit, and an imaging optical system is formed by the lens unit and the second lens unit, and wherein the electronic processor is further configured to generate the first shake correction driving signal by using a difference value between the first rotation that is determined and the second rotation that is determined and a value made to reflect a ratio of a correction angle of the lens unit relative to a rotation angle of the casing.
14. The imaging device according to claim 13 , wherein the electronic processor is further configured to generate a second shake correction driving signal by using the difference value, and drive the lens unit in at least one of the yawing direction or the pitching direction on a basis of the second shake correction driving signal.
15. The imaging device according to claim 13 , wherein the lens unit is disposed in a sealed state within the casing.
16. The imaging device according to claim 13 , wherein the lens unit is disposed in a sealed state within the casing by attaching the second lens unit with a state that the photographic subject side of the lens unit is blocked by the second lens unit.
17. The imaging device according to claim 13 , wherein the electronic processor is further configured to perform image processing for a captured image signal acquired by the lens unit, wherein the image processing includes performing image distortion correction for the captured image signal by using the difference value.
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March 24, 2017
April 13, 2021
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